{
  "manageEntity": {
    "action": "Unsubscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xf4fdf42335469a01d3905a94484c0aeeaf9422bf4699a83f046a72b3283cedaa",
    "signature": "0xc4d50851f1c48d1ac6ef98d6f223d80bde0e3e2406fe54e0c2ea89d01bc6d44b437bcd5f9bbfd57107499d3a8a275b99fbf57c0e64185b92af5827025397b0cd1c",
    "signer": "0x7F9DE0DcBE9D407b8D2F66935a8ce84F440D48e4",
    "userId": "174567284"
  }
}